The mithkal or sextula (in Persian and Arabic: مثقال) is an Arabic unit of weight used in Iran, mostly for weighing gold and Saffron. It is equivalent to a little over 4.6 grams. The word mithkal is sometimes also used to mean a very small amount, due to its use in the Qu'ran in this way.
As a measure of conversion, one Mithkal is equal to:
- 4.6875 g = 72.3392 grains = 0.1507 troy ounces